青い

1. Origins, structure, and basic meaning

• Structure: In 青い (あおい), blue 青 plus adjectival い forms an i-adjective for color or immaturity.
• Basic usage: 青い denotes blue or greenish-blue color and can figuratively evaluate a person's judgment or experience as immature.

2. Common pitfalls and similar expressions

• Blue color and immaturity
  • The modified noun and predicate select the color or evaluative sense.